Home / 21,145.44-31,659.36-10,705.92

Finding the Fourth Proportional to 21,145.44, 31,659.36 and 10,705.92

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Solution

The fourth proportional to 21,145.44, 31,659.36 and 10,705.92 is: 16,029.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.44 : 31,659.36 = 10,705.92 : x
  2. Step 2: Convert to fraction form
    21,145.44/31,659.36 = 10,705.92/x
  3. Step 3: Cross multiply
    21,145.44x = 31,659.36 × 10,705.92
  4. Step 4: Simplify right side
    21,145.44x = 338,942,575.41
  5. Step 5: Solve for x
    x = 338,942,575.41/21,145.44
  6. Step 6: Final answer
    x = 16,029.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.